My 4 cyl S-10 immediatly revs to 4500 rpm when starting. Wht?
This morning when starting my 1994 S-10, it immeditaly reved to 4500 rpm"s. Shuting down and restarting had same results. The accelerator is moving freely.
2 things one take off your throttle body and clean it the sensors in there could have crud on them then clean your mass air flow sensor and check you vacuum lines and she should run like a champ.
I found a disconnected vacumn line. Thanks.
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